An information processing system includes a data processing apparatus and multiple storage apparatuses. The data processing apparatus stores, into a memory, write data to be written to a first storage apparatus, and sends, to the first storage apparatus, a first transfer request containing information of a storing location of the write data in the memory. The first storage apparatus executes a transfer process to read the write data from the storing location, and writes the write data to a first storage area in the first storage apparatus; sends, to a second storage apparatus, a second transfer request instructing a transfer of the write data from the memory to the second storage apparatus; and sends, to a third storage apparatus, a third transfer request instructing a transfer of the write data from the first storage area to the third storage apparatus.